Help! I need some PMA advice! I'm struggling big-time in this area.

How do you guys maintain PMA day after day? I'm 2 months into this pre-BD realization and might have another 2 months to endure before the BD. Not to mention the time afterwards. I'm struggling. I've been DB'g for about 3 weeks but I feel like I'm slipping up. PMA is one of the toughest areas for me, need some tips.